CallStack (from HasCallStack):
error, called at src/Conjure/Bug.hs:21:15 in conjure-cp-2.4.0-Ix4U3uN6RJ2JFXQO53asWL:Conjure.Bug
bug, called at src/Conjure/Compute/DomainUnion.hs:81:25 in conjure-cp-2.4.0-Ix4U3uN6RJ2JFXQO53asWL:Conjure.Compute.DomainUnion
Domain.domainUnion vertices vertices
CallStack (from HasCallStack): error, called at src/Conjure/Bug.hs:21:15 in conjure-cp-2.4.0-Ix4U3uN6RJ2JFXQO53asWL:Conjure.Bug bug, called at src/Conjure/Compute/DomainUnion.hs:81:25 in conjure-cp-2.4.0-Ix4U3uN6RJ2JFXQO53asWL:Conjure.Compute.DomainUnion